Read it through once

At the foot of each sofa was a side-door, for entrance and exit. Along the whole length of the sofa on each side of the car ran a row of large single-plate windows, of a blue tint—blue to soften the bitter glare of the sun and protect one's eyes from torture. These could be let down out of the way when one wanted the breeze. In the roof were two oil lamps which gave a light strong enough to read by; each had a green-cloth attachment by which it could be covered when the light should be no longer needed.